Chemistry Test
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is the total number of atoms in H₂SO₄?
Back
7
2.
FLASHCARD QUESTION
Front
Which of the following is NOT evidence that a chemical reaction has occurred? (produces light/heat, production of a gas, formation of a precipitate, melting)
Back
melting
3.
FLASHCARD QUESTION
Front
What property of matter is demonstrated when a metal is hammered into a thin sheet?
Back
Malleability
4.
FLASHCARD QUESTION
Front
What is a sign of a chemical change? (Change in shape, Change in temperature, Change in size, Change in texture)
Back
Change in temperature
5.
FLASHCARD QUESTION
Front
What is the smallest unit of structure in an element that gives its identity?
Back
atom
6.
FLASHCARD QUESTION
Front
Define a chemical reaction.
Back
A process where substances (reactants) are transformed into different substances (products).
7.
FLASHCARD QUESTION
Front
What is the difference between a physical change and a chemical change?
Back
A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.
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